Improvement in bench-vises



JAMES M. POORE, OF BURNETT, WISCONSIN.

IMPROVEMENT IN BENCH-VISES.

Specification forming part of Letters Patent No. 16B ,984, dated April13, 1875; application filed March 6, 1875.

To all whom it may concern:

Be it known that 1, JAMES M. POORE, of Burnett, in the county of Dodgeand State of \Visconsin, have invented cer ain Improvements inBench-Vises, of which the following is a specification:

My invention consists in a metal frame containing a slide and a screwfor moving the same, the device being adapted for application tocarpenters and joiners benches for the purpose of clamping and holdingblocks of wood, &c., on the face of the bench.

Figure 1 represents a top-plan view of a bench provided with myimprovement; Fig.

2, a bottom-plan view of the same; Fig. 3, a longitudinal verticalsection" of the same; and Fig. 4., a transverse "ertical section on theline as x.

A represents the frame of the device, consi. ting of two parallel armsor guides, a, connected at one end by a cross-piece, b, and provided ontheir outer edges with ears 0, to receive fastening-screws. B representsa sliding block or plate, mounted between the arms a. 0 represents ascrew, passing through a threaded hole in the cross-bar b, and bearingat its inner end in a seat or hole in the slide B, as snown in Figs. 2and 3. The outer end of the screw is provided with a transverse rod 0"handle, d, by which to turn it, and with a plate, 6, which is held frommoving lengthwise of the screw, while at the same time the screw turnsfreely in it. Through the slide B I make two vertical holes, one toreceive a wooden pin or key, 9, and the other to receive a bolt or dog,h, as shown in Figs. 2 and 3.

In applying the device to a bench I first out lengthwise through the topof the bench, at one end, a slot or opening, 6, and mount therein aclosely-fitting wooden slide, E, as shown in Figs. 1, 2, and 4. I thensecure the frame A to the under side of the bench-top, below the slot oropening t, and screw the plate 6 fast to the outer end of the slide E,and also secure the slide E, by the vertical bolt h, to the metal slideB, as shown. When the screw is turned it is caused to move end wisethrough the bar 12, and, by means of the slide B and plate 6, it movesthe wooden slide E. In the wooden slide I mount a vertical pin or key,g, and in the face of the bench, in line with the key g, I mount acorresponding key, k, as shown in Figs. 1, 2, and 3, so that by placingthe object to be held on the face of the bench between the two keys, andthen turning the screw in the proper direction to move the slide E andits key inward, the object will be clamped tightly between the keys.

lVhen the clamp is not required for use the keys are driven down flushwith the surface of the bench, and the slide moved inward until itcloses the opening or slot, after which the bench will present a smoothunbroken surface, as usual.

In order to enable my clamp to hold objects of various lengths, theremay be a series of the pins or keys k, at proper distances apart,extending to the foot or rear end of the bench.

It is obvious that by swiveling the end of the screw in the slide B, sothat it will move the same in both directions, the plate 0 may bedispensed with 5 but the arrangement shown is considered the better one.

The plate 0 may be arranged to fasten on the outer end of the woodenslide, or provided with a flange to fasten on the under side of thesame, the latter being desirable when the slide is'a thin one.

My clamp is cheap, simple, and durable, and, being applicable to allordinary benches, it may be put on the market and sold as an article oftrade.

By means of the clamp objects may be very quickly and firmly held on theface of the bench while being worked into shape or glued or otherwisesecured together.

l/Vhat I claim as my invention is The clamping device for work-benches,consisting of the frame A, slide B, and screw 0, constructed andarranged to operate substantially as shown and described.

JAMES M. roonn.

WVitnesses:

W. H. TAYLOR, R. L. OLIVER.

